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SITES sediment mapping continues onward to Lake Almbergasjön

16/04/2021 « Back
Niklas Rakos drilling a hole in the ice for sampling the lake sediment. Photo: Erik Lundin. Niklas Rakos drilling a hole in the ice for sampling the lake sediment. Photo: Erik Lundin.
SITES is mapping lake sediments for the lakes included in the thematic programmes SITES Water and SITES AquaNet, to enable a better understanding of biogeochemical processes within the lakes. Sampling has now started at Lake Almbergasjön at Abisko Scientific Research Station.

Since the lake is still ice-covered, Abisko research engineers Niklas Rakos and Erik Lundin took the opportunity to collect a deep sediment core. Using a Russian corer, nearly 3 meters of sediment from Almbergasjön was collected.

The sediment core was sliced and sediment subsamples stored for later analysis (e.g. water content, C, N, grain size). The sediment mapping campaign on Lake Almbergasjön will continue later in 2021 with a sub-bottom profile survey and gravity core collection across the lake.
A sediment core from Lake Almbergasjön collected using a Russian Corer. Photo: Erik Lundin.
A sediment core from Lake Almbergasjön collected using a Russian Corer. Photo: Erik Lundin.
SITES sediment mapping
Sediment sub-bottom profiling has already been conducted and long and short sediment cores have been collected at Lake Erssjön (Skogaryd Research Catchment) and at Lake Feresjön (Asa Research Station). Sediment cores have previously been collected for Lake Tarfala and a high-resolution bathymetry map exists (Kirchner et al. 2019). A sediment sub-bottom profiling survey was conducted for Lake Erken in 2017.  
 
Read more about the sediment sampling in news articles on SITES web and in our newsletter:

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